Safety pin mechanism in double action triggers

ABSTRACT

Invention is about the innovation in trigger locking pins which prevent the pistols to be fired involuntarily.

TECHNICAL FIELD

Invention is about the innovation in trigger locking pins which prevent the pistols to be fired involuntarily.

PREVIOUS TECHNIQUE

In present locking mechanisms, locking pin is placed in front of the trigger in single action and double action triggers. This structure can be summarized as; trigger is divided longitudinally in two pieces and an additional piece is inserted between that two halves. Back side of that additional piece is designed to be rested to the tip of the part which trigger moves in, in the trigger guard. Thus, stopping of the trigger is provided after a certain distance by blocking it in involuntary actions (falling etc.). Mentioned mechanism is described in US20030213159 numbered patent application. The safety member (4) is placed between two trigger parts (2) and (2a). In an involuntarily action, the back side (12) of the safety member (4) is preventing the movement by hitting to the front wall (12a) (FIG. 3). But in a voluntarily pressing action trigger mechanism returns to its normal function as shown in FIG. 8b.

BRIEF DESCRIPTION OF THE INVENTION

Invention is aimed to resolve the problem sourced by trigger locking pin mechanism in double action pistols. In a pressing movement with the invention, trigger locking pin, which is assembled on the trigger, does not disturb the user by not being separated from the trigger and it makes the user feel as touching a single trigger. Nonetheless, except the firing position, it provides the trigger lock to work.

MEANINGS OF THE FIGURES

FIG. 1. Trigger Assembly Cross Section View

FIG. 2. Trigger Assembly Single Action View

FIG. 3. Locking Position of the Trigger Locking Pin

FIG. 4. Trigger Locking Pin Detailed View

FIG. 5. Trigger Locking Pin Isometric View

The correspondence of the part numbers indicated in the figures are given below.

-   -   1. Body     -   2. Trigger     -   3. Trigger Locking Pin

DETAILED DESCRIPTION OF THE INVENTION

Invention is about the innovation in trigger locking pins which prevent the pistols to be fired involuntarily. In the trigger safety mechanisms described in the patent application cited in “Previous Technique” section which is a brief summary of the present mechanism in market, the design causes a reaching problem to the trigger for the users. The problem which is tried to be overcame with our invention has its design based on specific measures and angles (Shown in FIG. 2). With that design the problem is solved by preventing the trigger locking pin (3) to move out of the trigger (2).

The double action trigger mechanism locking pin is scaled based on the (h) axis. Regarding to this; (h) axis is positioned 1.2 millimeters below from the top of the pin's remaining part which is placed in the body and it is also placed to pass through from the center of the round core connection part that trigger locking pin (3) is connected to the trigger. The start of the basement part of the trigger locking pin (3), which stays in the body to provide the safety, is designed to make 3 degrees angle with the (h) axis and to be started from the 0.8 millimeters below (k) from the axis. The sharp tip of the trigger locking pin (3) is placed to make an 18 degrees angle (1) with the (h) axis. And the distance between the sharp tip of the trigger locking pin (3) and the center of the round core connection part that trigger locking pin (3) is connected to the trigger is 8.5 millimeters. Thus, in involuntary trigger pressing actions, it holds on to the pistols body and prevents firing. The distance (d) between the lower base of the center of the round core connection part that trigger locking pin (3) is connected to the trigger and the trigger locking pin (3) is 4.5 millimeters regarding to the (m) axis which is parallel to the basement. The start of the lower part, which forms the trigger from the pin, is placed 2.5 millimeters away from the (m) axis. The distance (g) which is formed by that lower part, which forms the trigger from the pin and the tip part which stays in the pistol body has a total measure of 32.2 millimeters.

During the running of the trigger assembly in the single action position, the position of the trigger locking pin (3) is showed in front of the trigger in FIG. 3. In an involuntary usage of trigger (2), the trigger locking pin (3) is pressed to the body (1) and prevents firing as shown in FIG. 3. The locking mechanism works that way. 

1. Safety pin mechanism in double action triggers characterized by; being scaled based on the (h) axis; the positioning of the (h) axis is 1.2 millimeters below from the top of the pin's remaining part which is placed in the body and it is also placed to pass through from the center of the round core connection part that trigger locking pin (3) is connected to the trigger; the start of the basement part of the trigger locking pin (3), which stays in the body to provide the safety, is designed to make 3 degrees angle with the (h) axis and to be started from the 0.8 millimeters below (k) from the axis; the sharp tip of the trigger locking pin (3) is placed to make an 18 degrees angle (1) with the (h) axis; the distance between the sharp tip of the trigger locking pin (3) and the center of the round core connection part that trigger locking pin (3) is connected to the trigger is 8.5 millimeters; the distance (d) between the lower base of the center of the round core connection part that trigger locking pin (3) is connected to the trigger and the trigger locking pin (3) is 4.5 millimeters regarding to the (m) axis which is parallel to the basement; the start of the lower part, which forms the trigger from the pin, is placed 2.5 millimeters away from the (m) axis and the distance (g) which is formed by that lower part, which forms the trigger from the pin and the tip part which stays in the pistol body has a total measure of 32.2 millimeters. 